相邻多环路中最短径路的选择方法

Method of Selecting the Shortest Route among Adjacent Multi Ring Lines

在分析我国铁路货运最短径路示意图的基础上，从解决相邻双环路上最短径路出发，经归纳得到四种基本模型，分别计算分析出这四种模型的最短径路，并进一步拓展，解决了三环路及其以上的最短径路问题。

On the basis of analyzing the sketch map of the shortest route of railway freight volume,from the point of solving the shortest route between adjacent double ring lines,the author obtained four basic models after summarization,and calculated the shortest routes for them respectively.The author further explored and solved the problem of the shortest route for threering,and lines of more than three ring and put forward some suggestions.